hush/modutils/rmmod.c
Denis Vlasenko ba1315d0fb modutils/*: rewrite by Timo Teras <timo.teras AT iki.fi>
- a lot faster (linear algorithmic complexity, smaller memory foot print)
- a lot smaller (the old code was overly complicated)
- loading of aliases is now module-init-tools compliant
- blacklisting is done correctly (-b option added)
- module argument quoting done right
- depmod now correctly generates modules.symbols and modules.alias

add/remove: 16/21 grow/shrink: 4/6 up/down: 6930/-9316 Total: -2386 bytes
   text    data     bss     dec     hex filename
 806039     592    6680  813311   c68ff busybox_old
 803498     592    6676  810766   c5f0e busybox_unstripped
2008-09-13 14:59:38 +00:00

48 lines
1.1 KiB
C

/* vi: set sw=4 ts=4: */
/*
* Mini rmmod implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
* Copyright (C) 2008 Timo Teras <timo.teras@iki.fi>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
#include "libbb.h"
#include "modutils.h"
int rmmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int rmmod_main(int argc UNUSED_PARAM, char **argv)
{
int n;
unsigned int flags = O_NONBLOCK|O_EXCL;
/* Parse command line. */
n = getopt32(argv, "wfas"); // -s ignored
argv += optind;
if (n & 1) // --wait
flags &= ~O_NONBLOCK;
if (n & 2) // --force
flags |= O_TRUNC;
if (n & 4) {
/* Unload _all_ unused modules via NULL delete_module() call */
if (bb_delete_module(NULL, flags) != 0 && errno != EFAULT)
bb_perror_msg_and_die("rmmod");
return EXIT_SUCCESS;
}
if (!*argv)
bb_show_usage();
while (*argv) {
char modname[MODULE_NAME_LEN];
filename2modname(bb_basename(*argv++), modname);
if (bb_delete_module(modname, flags))
bb_error_msg_and_die("cannot unload '%s': %s",
modname, moderror(errno));
}
return EXIT_SUCCESS;
}